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<?php

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/**

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* @author OnTheGo Systems

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class WPML_Languages_AJAX {

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private $sitepress;

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private $default_language;

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/**

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* WPML_Languages_AJAX constructor.

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* @param SitePress $sitepress

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public function __construct( SitePress $sitepress ) {

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$this->sitepress = $sitepress;

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$this->default_language = $this->sitepress->get_default_language();

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}

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public function ajax_hooks() {

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add_action( 'wp_ajax_wpml_set_active_languages', array( $this, 'set_active_languages_action' ) );

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add_action( 'wp_ajax_wpml_set_default_language', array( $this, 'set_default_language_action' ) );

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}

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private function validate_ajax_action() {

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$action = '';

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$nonce = '';

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if ( array_key_exists( 'action', $_POST ) ) {

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$action = filter_var( $_POST['action'] );

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}

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if ( array_key_exists( 'nonce', $_POST ) ) {

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$nonce = filter_var( $_POST['nonce'] );

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}

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return $action && $nonce && wp_verify_nonce( $nonce, $action );

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}

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public function set_active_languages_action() {

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$failed = true;

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$response = array();

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if ( $this->validate_ajax_action() ) {

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$old_active_languages = $this->sitepress->get_active_languages();

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$old_active_languages_count = count( (array) $old_active_languages );

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$lang_codes = filter_var( $_POST['languages'], FILTER_SANITIZE_STRING, FILTER_REQUIRE_ARRAY );

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$setup_instance = wpml_get_setup_instance();

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if ( $lang_codes && $setup_instance->set_active_languages( $lang_codes ) ) {

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$active_languages = $this->sitepress->get_active_languages();

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$html_response = '';

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foreach ( (array) $active_languages as $lang ) {

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$is_default = ( $this->default_language === $lang['code'] );

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$html_response .= '<li ';

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if ( $is_default ) {

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$html_response .= 'class="default_language"';

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}

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$html_response .= '><label><input type="radio" name="default_language" value="' . $lang['code'] . '" ';

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if ( $is_default ) {

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$html_response .= 'checked="checked"';

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}

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$html_response .= '>' . $lang['display_name'];

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if ( $is_default ) {

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$html_response .= ' (' . __( 'default', 'sitepress' ) . ')';

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}

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$html_response .= '</label></li>';

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$response['enabledLanguages'] = $html_response;

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}

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$response['noLanguages'] = 1;

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if ( ( count( $lang_codes ) > 1 ) || ( $old_active_languages_count > 1 && count( $lang_codes ) < 2 ) ) {

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$response['noLanguages'] = 0;

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}

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$updated_active_languages = $this->sitepress->get_active_languages();

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if ( $updated_active_languages ) {

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$wpml_localization = new WPML_Download_Localization( $updated_active_languages, $this->default_language );

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$wpml_localization->download_language_packs();

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$wpml_languages_notices = new WPML_Languages_Notices( wpml_get_admin_notices() );

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$wpml_languages_notices->maybe_create_notice_missing_menu_items( count( $lang_codes ) );

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$wpml_languages_notices->missing_languages( $wpml_localization->get_not_founds() );

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if ( class_exists( 'WPML_TM_Translation_Priorities' ) && $this->sitepress->is_setup_complete() ) {

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WPML_TM_Translation_Priorities::insert_missing_default_terms();

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}

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}

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$failed = false;

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}

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icl_cache_clear();

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/** @deprecated Use `wpml_update_active_languages` instead */

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do_action( 'icl_update_active_languages' );

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do_action( 'wpml_update_active_languages' );

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}

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if ( $failed ) {

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wp_send_json_error( $response );

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} else {

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wp_send_json_success( $response );

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}

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}

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public function set_default_language_action() {

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$failed = true;

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$response = array();

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if ( $this->validate_ajax_action() ) {

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$previous_default = $this->default_language;

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$new_default_language = filter_var( $_POST['language'], FILTER_SANITIZE_FULL_SPECIAL_CHARS, FILTER_NULL_ON_FAILURE );

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$active_languages = $this->sitepress->get_active_languages();

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$active_languages_codes = array_keys( $active_languages );

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if ( $new_default_language && in_array( $new_default_language, $active_languages_codes, true ) ) {

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$status = $this->sitepress->set_default_language( $new_default_language );

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if ( $status ) {

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$response['previousLanguage'] = $previous_default;

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$failed = false;

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}

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if ( 1 === $status ) {

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$response['message'] = __( 'WordPress language file (.mo) is missing. Keeping existing display language.', 'sitepress' );

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}

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}

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}

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if ( $failed ) {

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wp_send_json_error( $response );

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} else {

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wp_send_json_success( $response );

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}

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}

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}

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